<html>
  <body>
    <form name="test" method="post">
      <input type="hidden" name="hidden_blank" value=''/>
      <input type="hidden" name="hidden_noval"/>
      <input type="text" name="visible_blank" value=''/>
      <input type="text" name="visible_noval"/>
      <input type="submit"/>
    </form>
  </body>
</html>
